PLEASE HELP!

how can nuclear fission be made to happen?

a. atoms are hit with neutrons

b. atoms are hit with x rays

c. atoms are hit with light

d. atoms are hit with gases

What is the percentage of hydrogen in nitrogen trihydride

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.